C#Exams 3. The Explorer (on Java Code)

import java.util.Scanner;

public class _3_TheExplorer {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner scan = new Scanner(System.in);
        int size = scan.nextInt();

        String innerHyphenSeq;
        String outerHyphenSeq;
        int outerHyphens = size / 2;
        String topBottomOuterHyphenSeq = newString('-', outerHyphens);
        System.out.printf("%1$s*%1$s\n", topBottomOuterHyphenSeq);
        int innerHyphens = 1;
        for (int row = 1; row <= (size / 2); row++) {
            outerHyphens -= 1;
            outerHyphenSeq = newString('-', outerHyphens);
            innerHyphenSeq = newString('-', innerHyphens);
            System.out.printf("%1$s*%2$s*%1$s\n", outerHyphenSeq, innerHyphenSeq);
            innerHyphens += 2;
        }

        outerHyphens = 1;
        innerHyphens = size - 4;
        for (int row = (size / 2) + 1; row < size - 1; row++) {
            outerHyphenSeq = newString('-', outerHyphens);
            innerHyphenSeq = newString('-', innerHyphens);
            System.out.printf("%1$s*%2$s*%1$s\n", outerHyphenSeq, innerHyphenSeq);
            outerHyphens++;
            innerHyphens -= 2;
        }

        System.out.printf("%1$s*%1$s\n", topBottomOuterHyphenSeq);
    }

    private static String newString(char ch, int size) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < size; i++) {
            sb.append(ch);
        }

        return sb.toString();
    }
}